something like this
MATCH path=(n)-[*..5]-()
where id(n) = {node_ids}[0]
AND ALL(n in nodes(path) WHERE id(n) IN {node_ids})
AND ALL(r in rels(path) WHERE id(r) IN {rel_ids})
return path
> Am 10.03.2015 um 22:40 schrieb Martin Troup <troup...@gmail.com>:
>
> Thanks for your reply!
>
> So let me change the problem a little bit. Let say I know all of the nodes
> and relationships (its IDs) where I want to search for a pattern (for example
> triangle). Can I define a cypher query with MATCH clause, that will find a
> triangle (or any graph pattern) between those defined relationships and nodes?
>
> The problem in general would be to execute a cypher query on a subgraph that
> I define (by naming all of nodes and relationships IDs).
>
> So I am looking for something like:
>
>
>
> MATCH any_graph_pattern
>
> IN (node_id_4, node_id_3, … , relationship_id_1, …)
>
>
>
> If there is such a way to express this with Cypher, is the execution of the
> query going to be fast enough? If the subgraph where I am looking for the
> graph pattern is going to be small enough.
>
>
> Thanks again for your time!
> Martin
>
> Dne úterý 10. března 2015 11:31:10 UTC+1 Michael Hunger napsal(a):
> There is no universal way
>
> this is a quite generic approach but it will be super slow
>
> MATCH path = (a)-[]-(b)-[]-(c)
> WHERE ANY(r in rels(path) WHERE id(r) = 5)
> RETURN path
>
> it is better if you can do:
>
> match path = (a)-[r]-(b)-[]-(c)
> where id(r) = 5
> return path
> union
> match path = (a)-[]-(b)-[r]-(c)
> where id(r) = 5
> return path
>
> Michael
>
>> Am 10.03.2015 um 11:24 schrieb Martin Troup <trou...@ <>gmail.com
>> <http://gmail.com/>>:
>>
>> Hello everyone,
>>
>>
>>
>> lets say I have a graph pattern (for example (a)-[]-(b)-[]-(c), but it can
>> be any graph pattern). I want to find this graph pattern with Cypher query.
>> I know partial information about the exact pattern I am looking for, for
>> example some of node IDs, or relationship IDs.
>>
>> Here I will show an example. I am looking for a pattern (a)-[]-(b)-[]-(c)
>> and I know there is a relationship with ID 5 in it, but I don’t know its
>> position. So it can be the one between nodes a and b or between b and c.
>>
>> I am wondering if there is an universal way to express this with Cypher
>> query, something like
>>
>>
>>
>> MATCH any_graph_pattern
>>
>> WHERE relationship_id(5)
>>
>>
>>
>> where I can say which exact relationships or nodes are part of the graph
>> pattern I am looking for even though I don’t know their position within it.
>>
>>
>>
>> Thanks a lot for a reply!
>>
>>
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